9898400289 has 16 divisors (see below), whose sum is σ = 13344895872. Its totient is φ = 6525787008.

The previous prime is 9898400231. The next prime is 9898400311. The reversal of 9898400289 is 9820048989.

It is not a de Polignac number, because 9898400289 - 2¹¹ = 9898398241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9898400789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62307 + ... + 153879.

It is an arithmetic number, because the mean of its divisors is an integer number (834055992).

Almost surely, 2^9898400289 is an apocalyptic number.

It is an amenable number.

9898400289 is a deficient number, since it is larger than the sum of its proper divisors (3446495583).

9898400289 is a wasteful number, since it uses less digits than its factorization.

9898400289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91976.

The product of its (nonzero) digits is 2985984, while the sum is 57.

The square root of 9898400289 is about 99490.7045356500. The cubic root of 9898400289 is about 2147.1135080374.

The spelling of 9898400289 in words is "nine billion, eight hundred ninety-eight million, four hundred thousand, two hundred eighty-nine".